Hubbell Water Heaters - Model ETX Safety Electric Water Heater

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The Hubbell model ETX Tankless electric water heater is a highly reliable and easily maintained heater designed for operation in a commercial or industrial application. The Hubbell ETX Tankless heater is compact, extremely efficient, takes up minimal space, and reduces operating costs.

Category: instantaneous water heaters | process heaters | tepid water heaters...

MasterFormat: Plumbing Equipment | Light-Commercial Electric Domestic Water Heaters



Hubbell Water Heaters
45 Seymour Street
P.O. Box 288
Stratford, CT 06615
Tel: (203) 378-2659
Fax: (203) 378-3593

info@hubbellheaters.com

http://www.hubbellheaters.com/

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Overview


Model ETX Safety Electric Water Heater

The Hubbell model ETX Tankless electric water heater is a highly reliable and easily maintained heater designed for operation in a commercial or industrial application. The Hubbell ETX Tankless heater is compact, extremely efficient, takes up minimal space, and reduces operating costs. Hubbell's vast experience, meticulous engineering and advanced technology ensure that you can rely on the model ETX for your water heating needs in even the most demanding and critical applications. The Hubbell Tankless is the right choice for your tepid water requirements, as you will be providing your customer with a quality product that is long lasting, trouble-free and energy efficient.


Heavy Duty Construction
  • Constructed with high grade materials to ensure long operating life
  • Simple to specify and easy to install and operate
  • Factory packaged heater provides trouble-free installation and operation
  • NEMA 4 construction standard
Reliability
  • Engineered for your specific application to ensure reliable operation
  • Wide selection of sizes to meet the needs of even the most demanding application
High Efficiency
  • On demand heating eliminates costly and cumbersome storage tanks
  • Instantaneous design reduces stand-by heat loss and significantly lowers operating costs compared to traditional storage systems

The Hubbell ETX Electric Tankless Water Heater provides high volume tepid water for safety drench systems with flow rates as high as 40 gpm. The heater contains high powered heating elements that heat water only when there is demand for tepid water. When tepid water is needed, a built in flow sensor measures the exact flow rate, and that data combined with temperature readings at the heater's inlet and outlet are processed by the electronic temperature controller. This data is continuously transmitted to the temperature controller, which constantly calculates the precise amount of power (kW) needed to achieve the desired temperature. A zero cross over firing signal is sent to the fast acting triacs in order to modulate the heating elements to the precise level needed to meet demand. The Hubbell ETX heater uses only as much power as is needed, while delivering accurate and consistent tepid water temperature.


General Specifications
Temperature Controller

A sophisticated electronic temperature controller with LED digital display provides the user interface. The temperature controller processes all flow and temperature data and calculates the precise amount of power needed to meet demand.

Full Heater Modulation

Each heating element is switched on/off using a fast acting solid state triac with zero cross over firing control. This switching schema provides full modulation of each heating element, ensuring that the precise amount of heat is added to meet demand. To improve operating efficiency and component longevity, each triac is mounted to a heat sink located on the incoming supply piping so that heat generated by the triac during the switching process is dissipated into the water.

Proper Power Integrity

All Hubbell tankless water heaters, including all 3 phase models, are engineered to operate as a balanced load and operate at 0.999 Power Factor. All Hubbell 3 phase models are designed for 3 wire (3 live, 1 ground) and 4 wire power systems and draw equal current across all conductors to maintain the power integrity of the users electrical system. Hubbell does not recommend the use of heaters that operate as an unbalanced load, as is common with staged heaters designed for star systems (3 live, 1 neutral, 1 ground) that require use of the neutral leg. All load switching in Hubbell tankless models is performed as zero cross over, eliminating phase angle firing interference and associated EMI issues.

Full Resource Staging

The Hubbell tankless control schema ensures that usage is equalized across all heating circuits. To achieve this, once the controller has calculated the precise amount of kW required, all circuits are energized in a staggered fashion such that each circuit is proportionally and independently energized and then time staggered between circuits. This Full Resource Staging Schema reduces EMI output, increases component longevity, and provides highly accurate and consistent hot water temperatures. For three phase models, all circuits are fully modulated and synchronized to operate as a balanced load.

Building Management Integration

Remote Control:Ability to remotely enable or inhibit the heating operation of the unit using one of the following two methods:
1. Customer supplied 24VDC signal is user configured for either Inhibit Mode or Normal Operation Mode.
2. Customer supplied volt free contact is user configured for either Inhibit Mode or Normal Operation Mode.
Priority Control: An integrated SPDT potential free dry contact (NO/NC 10A @ 240VAC) energizes when the unit is heating and de-energizes when not heating. This feature is useful when it is desirable to give the water heater priority over another electrical load to ensure that both are not operational at the same time.


Optional Equipment
  • Type 316L stainless steel heating chamber for added corrosion resistance.
  • Special construction features. Please consult factory.
  • Inlet and Outlet Valve assembly simplifies installation and includes unions, shut offs, check valve,drain ports and pressure relief valve.
  • Heating chamber built to ASME Section VIII and "UM" stamped.
  • NEMA 1 enclosure for general purpose locations
  • Remote Control Display allows the heater to be installed in a remote location. The 3" x 5" NEMA 4 display enclosure can be located up to 250' from the heater and gives the operator full remote control and monitoring capabilities.
  • Explosion resistant construction for installation in a hazardous location. Standard is class 1, Division 2, Group B. If application requires other please specify Class, Division and Group rating required.
  • NEMA 4X enclosure, available in aluminum or stainless steel.
  • Floor Mount Enclosure Option.
  • Emergency stop button, located on control panel door.
  • UL Listed Package
  • Outdoor weather pacakge, for use in outdoor installations.

Please note: optional equipment may impact overall dimensions and weight. Please request submittal drawing from factory.


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Specifications

Model ETX Water Heater Specifications
Orientation: Wall Mounted
Voltages:
208 thru 600 Volt 50/60 Hz
Phase: 1 Φ or 3 Φ
kW Range: 8kW - 162kW
Power Factor: 0.999
Thermal Efficiency: 98% +
Inlet/Outlet Size:
2 & 3 element 8-27kW 3/4" sweat
6, 12 & 18 element 1" sweat
Min/Max Flow:
6, 12 & 18 element 24-162 kW 0.5 GPM, 40 GPM Max
2 & 3 element 8-27 kW 0.2 GPM Min, 8.0 GPM Max
Design WP: 150 psi
Design TP: 300 psi
Elements: Incoloy 800
Standby Power: < 3 Watts
Heating Chamber Warranty: 5 Year
Electrical Warranty: 1 Year
Enclosure: NEMA 4 enclosure suitable for wet or outdoor applications
Approvals: ASME on units over 58kW
Operator Control Capabilities Operator Control Capabilities Operator Control Capabilities
Power Limiting: Allows the operator to reduce the power consumption by any percentage to provide installation and operational flexibility and savings.
Diagnostics: Display inlet and outlet temperatures, flow rate and error codes to assist in troubleshooting.
Cost Calculator: Determine the exact cost of operating the heater. Input your cost per KW•Hr and the controller displays total KW•HRs consumed, total cost of operation, and total hot water usage (shown in gallons or liters).
Temperature Control: Set the digital display to the desired water temperature in °F or °C. Fceully adjustable in 1° increments from 32-104°F (0-40°C). A user adjustable +/- 3° calibration feature provides additional control for superior accuracy.
8 - 54 KW Models (2, 3 and 6 Element)
72 - 162 KW Models (12 and 18 Element)
2 & 3 ELEMENT MODEL TYPES 2 & 3 ELEMENT MODEL TYPES 2 & 3 ELEMENT MODEL TYPES 2 & 3 ELEMENT MODEL TYPES 2 & 3 ELEMENT MODEL TYPES 2 & 3 ELEMENT MODEL TYPES 2 & 3 ELEMENT MODEL TYPES
KW 3 Phase Voltages 3 Phase Voltages 3 Phase Voltages 3 Phase Voltages 1 Phase Voltages 1 Phase Voltages
KW 208V 240V 480V 600V 208V 240V
8 (2)
11 (3) (2)
12 (3) (2)
14 (3) (2) (2)
16 (3) (3) (3) (2)
18 (3) (3) (3) (2)
20 (3) (3)
21 (3) (3) (3) (3)
24 (3) (3) (3) (3)
27 (3) (3) (3) (3)
6 ELEMENT MODEL TYPES 6 ELEMENT MODEL TYPES 6 ELEMENT MODEL TYPES 6 ELEMENT MODEL TYPES 6 ELEMENT MODEL TYPES 6 ELEMENT MODEL TYPES 6 ELEMENT MODEL TYPES
KW 3 Phase Voltages 3 Phase Voltages 3 Phase Voltages 3 Phase Voltages 1 Phase Voltages 1 Phase Voltages
KW 208V 240V 480V 600V 208V 240V
24 (6) (6)
31 (6) (6)
33 (6) (6)
36 (6) (6) (6)
40 (6) (6)
42 (6) (6) (6) (6)
48 (6) (6) (6) (6) (6) (6)
54 (6) (6) (6) (6)
Note:Chart indicates (2) two element (3) three element (6) six element model types Note:Chart indicates (2) two element (3) three element (6) six element model types Note:Chart indicates (2) two element (3) three element (6) six element model types Note:Chart indicates (2) two element (3) three element (6) six element model types Note:Chart indicates (2) two element (3) three element (6) six element model types Note:Chart indicates (2) two element (3) three element (6) six element model types Note:Chart indicates (2) two element (3) three element (6) six element model types
12 & 18 KW 12 & 18 KW 12 & 18 KW 12 & 18 KW 12 & 18 KW
KW 3 Phase Voltages 3 Phase Voltages 3 Phase Voltages 3 Phase Voltages
KW 208V 240V 480V 600V
72 (12) (12) (12)
84 (12) (12) (12) (12)
96 (12) (12) (12) (12)
108 (12) (12) (12)
108 (18)
126 (18) (18) (18) (18)
144 (18) (18) (18) (18)
162 (18) (18) (18)
Note: Chart indicates twelve element (12) model types and eighteen (18) element model types Note: Chart indicates twelve element (12) model types and eighteen (18) element model types Note: Chart indicates twelve element (12) model types and eighteen (18) element model types Note: Chart indicates twelve element (12) model types and eighteen (18) element model types Note: Chart indicates twelve element (12) model types and eighteen (18) element model types
Heating Capacity and Amperage Chart
KW Rating Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) Heating Capability in GPM at °F Temperature Rise (°FΔT) MAX Amps (at 100% heater output) MAX Amps (at 100% heater output) MAX Amps (at 100% heater output) MAX Amps (at 100% heater output) MAX Amps (at 100% heater output) MAX Amps (at 100% heater output)
KW Rating 20°
ΔT
30°
ΔT
40°
ΔT
60°
ΔT
70°
ΔT
80°
ΔT
100°
ΔT
110°
ΔT
120°
ΔT
140°
ΔT
3 Phase Voltages 3 Phase Voltages 3 Phase Voltages 3 Phase Voltages 1 Phase Voltages 1 Phase Voltages
KW Rating 20°
ΔT
30°
ΔT
40°
ΔT
60°
ΔT
70°
ΔT
80°
ΔT
100°
ΔT
110°
ΔT
120°
ΔT
140°
ΔT
208V 240V 480V 600V 208V 240V
8 2.73 1.82 1.36 0.91 0.78 0.68 0.55 0.50 0.45 0.39 - - - - 38 -
11 3.75 2.50 1.88 1.25 1.07 0.94 0.75 0.68 0.63 0.54 31 - - - - 46
12 4.09 2.73 2.05 1.36 1.17 1.02 0.82 0.74 0.68 0.58 33 - - - 58 -
14 4.78 3.18 2.39 1.59 1.36 1.19 0.96 0.87 0.80 0.68 - 34 - - 67 58
16 5.46 3.64 2.73 1.82 1.56 1.36 1.09 0.99 0.91 0.78 44 39 - - 77 67
18 6.14 4.09 3.07 2.05 1.75 1.54 1.23 1.12 1.02 0.88 50 - 22 - 87 75
20 6.82 4.55 3.41 2.27 1.95 1.71 1.36 1.24 1.14 0.97 56 - - - 96 -
21 7.17 4.78 3.58 2.39 2.05 1.79 1.43 1.30 1.19 1.02 - 51 25 20 - 88
24 8.19 5.46 4.09 2.73 2.34 2.05 1.64 1.49 1.36 1.17 67 58 29 23 115 100
27 9.21 6.14 4.61 3.07 2.63 2.30 1.84 1.67 1.54 1.32 - 65 33 26 - 113
31 10.58 7.05 5.29 3.53 3.02 2.64 2.12 1.92 1.76 1.51 86 - - - 149 -
33 11.26 7.51 5.63 3.75 3.22 2.81 2.25 2.05 1.88 1.61 - 79 - - - 138
36 12.28 8.19 6.14 4.09 3.51 3.07 2.46 2.23 2.05 1.75 100 - 43 - 173 -
40 13.65 9.10 6.82 4.55 3.90 3.41 2.73 2.48 2.27 1.95 111 - - - 192 -
42 14.33 9.55 7.17 4.78 4.09 3.58 2.87 2.61 2.39 2.05 - 101 51 41 - 175
48 16.38 10.92 8.19 5.46 4.68 4.09 3.28 2.98 2.73 2.34 133 116 58 46 230 200
54 18.42 12.28 9.21 6.14 5.26 4.61 3.68 3.35 3.07 2.63 - 130 65 52 - 225
72 24.60 16.40 12.30 8.20 7.03 6.15 4.92 4.47 4.10 3.51 200 173 87 - - -
84 28.70 19.13 14.35 9.57 8.20 7.18 5.74 5.22 4.78 4.10 233 202 101 81 - -
96 32.80 21.87 16.74 10.93 9.37 8.20 6.56 5.96 5.47 4.69 267 231 116 92 - -
108 36.90 24.60 18.45 12.30 10.54 9.23 7.38 6.71 6.15 5.27 300 260 130 104 - -
126 43.05 28.70 21.53 14.35 12.30 10.76 8.61 7.83 7.18 6.15 350 303 152 121 - -
144 49.20 32.80 24.60 16.40 14.06 12.30 9.84 8.95 8.20 7.03 400 347 173 139 - -
162 55.35 36.90 27.68 18.45 15.81 13.84 11.07 10.06 9.23 7.91 - 390 195 156 - -
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